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Effect of hydrogen treatment on structure and phase state and hydrogen permeability of low-activation 10Cr12Mn20W and 10Cr9WVA steels

E.V Dyomina, V.V Fedorov, L.I Ivanov, T.D Zasadny, N.A Vinogradova2000年Fusion Engineering and DesignIF 1.7出版社

AbstractPhase composition, hydrogen diffusion parameters (permeability, solubility, and diffusion coefficient) and electro-physical properties of low-activation 10Cr12Mn20W and 10Cr9WVA steels were studied in 673–1173 K temperature range in the initial normalized state and after isothermal annealing in vacuum and hydrogen under 873 K for 600 h. It is shown that thermal treatment decreases hydrogen permeability in 10Cr12Mn20W steel and increases it in 10Cr9WVA steel. Hydrogen flux in 10Cr9WVA ferritic/martensitic steel increases due to hydrogen decarbonization, this agrees with electrical and magnetic property changes under hydrogen treatment. Permeability of tritium through the analyzed steels is estimated and compared with the values for 2.25Cr–1Mo, 9Cr–1Mo and 316 steels.

日本語訳

相変化、水素拡散パラメータ(透過度、溶解度、拡散係数)および電気物理的特性を、初期焼鈍状態および873Kで600時間の真空および水素雰囲気下での等温焼鈍後の10Cr12Mn20W鋼と10Cr9WVA鋼について、673〜1173Kの温度範囲で調査した。熱処理により、10Cr12Mn20W鋼の水素透過度は減少し、10Cr9WVA鋼の水素透過度は増加することが示された。10Cr9WVAフェライト系・マルテンサイト系鋼における水素フラックスの増加は、水素による脱炭に起因し、これは水素処理下での電気的および磁気的特性の変化と一致する。分析対象の鋼材を通じたトリチウム透過度を評価し、2.25Cr-1Mo鋼、9Cr-1Mo鋼および316鋼の値と比較した。

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